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Finding the Fourth Proportional to 340,878.26, 511,317.39 and 104,220.93

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Solution

The fourth proportional to 340,878.26, 511,317.39 and 104,220.93 is: 156,331.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,878.26 : 511,317.39 = 104,220.93 : x
  2. Step 2: Convert to fraction form
    340,878.26/511,317.39 = 104,220.93/x
  3. Step 3: Cross multiply
    340,878.26x = 511,317.39 × 104,220.93
  4. Step 4: Simplify right side
    340,878.26x = 53,289,973,910.97
  5. Step 5: Solve for x
    x = 53,289,973,910.97/340,878.26
  6. Step 6: Final answer
    x = 156,331.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.